fabric-and-synthetic3D flexible and breathable knit upper:chinlon+stretch yarn fabricNo-slip KPU studded outsoleQuick-drying,easy to clean and carry,machine washableSuitable for walking,doing yoga or other indoor exercise,or as leisure house slipperIf you already have a pair of onemix 3-in-1 3 way wear rome sneaker,you can try these inner as replacement.match them as you like,create your own style.